Seam seal

[R.Smith]

Ok..stupid question. I'm preparing to totally strip and paint my bump and have run into a dillema! After I gouge out all the all seam seal in the roof gutter and various seams in the bed ect...what do I apply first...the seam seal, the primer then the seal or do I prime, paint seal and repaint???

Thanks.

[Ashton_1012]

Ive never painted before, but I would think you would need to get down to bare metal, seal, then prime, then paint and clear. that is how bondo works. Could be that the sealer works better one primer though? what kind of seal are you using, mine needs all new seals as well.

[TNIceWolf]

The clue to the answer is that the seam sealer provides asolutely no rust protection when in in contact with bare metal. So it would make sense to primer first...seal....reprimer....and paint in my opinion

[jimmy828]

I choose to prime entire truck, sand,seam seal, prime entire truck again.Have not reach paint stage yet

[convincor]

http://semproducts.com/product-catalog/ ... am-sealer/
39777 HIGH-BUILD LEVELING SEAM SEALER
39387 SELF LEVELING SEAM SEALER
NOTE: PRIOR TO APPLYING VEHICLE TEMPERATURE SHOULD BE 70°F FOR AT LEAST 1 HOUR.
1. Make certain vehicle is level. Remove OEM sealer material from channel.
2. Clean surface with 3837( ) SEM SOLVE to remove any remaining sealer residue or soil. Blow off and
tack wipe channel to remove lint and dust.
3. Prime drip rails with 2K primer.4. Use masking tape to form a dam at the forward end of channel to prevent 39387 SELF LEVELING
SEAM SEALER or 39777 HIGH-BUILD SELF LEVELING SEAM SEALER from running out.
5. To remove cap, insert flat head screwdriver into slot & pry upward.
NOTE: For cap replacement, match circles and square, and snap back into place.
6. Place cartridge into 71119 UNIVERSAL MANUAL GUN OR 70039 PNEUMATIC DISPENSING GUN. Prior
to installing static mixer, equalize cartridge by dispensing product until both parts flow equally. Install
static mixer. Cut tip to desired application size.
CAUTION: Dispense 2-3 inches of test material to make certain color is uniform prior to applying to
job. Avoid marbling.
7. Dispense 39387 or 39777 in the center of the entire length of channel. 39387 or 39777 will flow out
and self level. Allow to cure for 20-30 minutes.
8. Remove and cut away the dam tape with a razor knife. If necessary, sand or trim dammed end and
contour to maintain required roof channel depth. USE CAUTION NOT TO SEPARATE 39387 or 39777
FROM BASE OF CHANNEL.
9. While product is still wet, remove excess by wiping with a small amount of lacquer thinner.

another
39377 may be applied directly to bare sanded metal or primed surfaces.
However; if the area will be subjected to any flexing or twisting,
including certain vehicle manufacturers roof skins, prime the area first
with a quality 2K urethane or epoxy primer before applying 39377. When
in doubt, prime with a quality 2K urethane or epoxy primer. Allow
primer to fully cure before applying 39377.
NOTE: 39377 should not be used directly over acid based self-etching
primers or vice versa. This application procedure can cause cracking
and blistering of the undercoat and topcoat.